Contacts of the strand formed by residues 240 - 243 (chain A) in PDB entry 1FIU
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with CYS 240 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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217A VAL* 3.5 9.8 - - + +
218A VAL 3.3 19.2 + - - -
238A ILE* 3.4 5.7 - - - +
239A ASP* 1.3 84.7 - - + +
241A VAL* 1.3 82.0 + - - +
242A TYR* 3.7 19.0 - - + +
272A LYS 4.0 7.9 - - - +
273A ARG* 3.7 23.3 - - - +
275A LYS* 3.8 35.9 - - - +
211D GLY* 5.3 4.0 - - - +
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Residues in contact with VAL 241 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
218A VAL* 3.3 26.7 - - + +
220A THR* 4.2 20.9 - - + -
228A ILE* 4.5 7.6 - - + -
231A ILE* 4.2 8.7 - - + +
232A ALA* 3.7 30.3 - - + +
238A ILE* 4.1 9.9 - - + -
240A CYS* 1.3 79.7 - - - +
242A TYR* 1.3 66.8 - - - +
273A ARG 3.0 14.1 + - - +
274A LEU* 3.3 20.0 - - + -
275A LYS 2.9 23.4 + - - -
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Residues in contact with TYR 242 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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217A VAL* 3.7 23.3 - - + +
218A VAL 2.8 18.9 + - - +
219A VAL* 3.2 15.8 - - + +
220A THR* 3.0 26.2 + - - +
240A CYS* 3.7 35.6 - - + +
241A VAL* 1.3 77.7 - - - +
243A HIS* 1.3 60.9 + - - +
275A LYS* 3.4 18.8 - - + -
276A ASP 3.3 24.9 - - - +
277A ILE* 4.4 6.3 - - - -
279A ASP 3.9 1.6 - - - -
280A LEU* 3.7 37.4 - - + +
283A ASP* 2.5 38.1 + - - +
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Residues in contact with HIS 243 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
47A ILE* 4.3 7.0 - - + -
219A VAL* 5.3 0.2 - - - -
220A THR* 3.6 15.5 - - + -
222A GLU 2.8 30.0 + - - -
223A PRO* 4.4 0.6 - - - +
228A ILE* 3.7 18.4 - - + -
242A TYR* 1.3 72.8 - - - +
244A PHE* 1.3 89.9 + + - +
245A ALA 3.0 33.8 + - - -
246A LEU* 3.4 23.8 + - + -
249A LEU* 3.8 20.5 - - + +
274A LEU* 4.0 7.9 - - + +
275A LYS 2.8 6.9 + - - -
276A ASP* 3.5 4.0 - - - +
277A ILE* 2.9 24.1 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il